The amount of fuel used by jumbo jets to take off is normally distributed with a mean of 4,000 gallons and a standard deviation of 125 gallons. A sample of 40 jumbo jets is randomly selected. (No need to interpolate) a. Compute the z-score for 3, 950 gallons. b. What is the probability that the mean number of gallons of fuel needed to take off for a randomly selected sample of 40 jumbo jets will be less than 3, 950 gallons? c. What is the probability that the mean number of gallons of fuel needed to take off for a randomly selected sample of 40 jumbo jets will be more than 3, 950 gallons?

MATLAB: An Introduction with Applications
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The amount of fuel used by jumbo jets to take off is normally distributed with a mean of 4,000 gallons and a standard deviation of 125 gallons. A sample of 40 jumbo jets is randomly selected. (No need to interpolate) a. Compute the z-score for 3, 950 gallons. b. What is the probability that the mean number of gallons of fuel needed to take off for a randomly selected sample of 40 jumbo jets will be less than 3, 950 gallons? c. What is the probability that the mean number of gallons of fuel needed to take off for a randomly selected sample of 40 jumbo jets will be more than 3, 950 gallons?
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